Added support for some legacy dds formats.
Added support for some legacy dds formats.

Danack/ImageMagick,kwm81/ImageMagick,Danack/ImageMagick,UniQP/ImageMagick,kwm81/ImageMagick,UniQP/ImageMagick,Danack/ImageMagick,kwm81/ImageMagick,UniQP/ImageMagick,Danack/ImageMagick,kwm81/ImageMagick,UniQP/ImageMagick,Danack/ImageMagick,UniQP/ImageMagick,Danack/ImageMagick,UniQP/ImageMagick,kwm81/ImageMagick,kwm81/ImageMagick